EP4226575C0 - Dezentralisierte verschlüsselung auf der basis von attributen mehrerer autoritäten - Google Patents

Dezentralisierte verschlüsselung auf der basis von attributen mehrerer autoritäten

Info

Publication number
EP4226575C0
EP4226575C0 EP21878308.2A EP21878308A EP4226575C0 EP 4226575 C0 EP4226575 C0 EP 4226575C0 EP 21878308 A EP21878308 A EP 21878308A EP 4226575 C0 EP4226575 C0 EP 4226575C0
Authority
EP
European Patent Office
Prior art keywords
encryption based
authority attributes
decentralized
decentralized encryption
authority
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP21878308.2A
Other languages
English (en)
French (fr)
Other versions
EP4226575B1 (de
EP4226575A1 (de
EP4226575A4 (de
Inventor
Pratish Datta
Ilan Komargodski
Brent Waters
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTT Research Inc
Original Assignee
NTT Research Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NTT Research Inc filed Critical NTT Research Inc
Publication of EP4226575A1 publication Critical patent/EP4226575A1/de
Publication of EP4226575A4 publication Critical patent/EP4226575A4/de
Application granted granted Critical
Publication of EP4226575C0 publication Critical patent/EP4226575C0/de
Publication of EP4226575B1 publication Critical patent/EP4226575B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/30—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy
    • H04L9/3093—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy involving Lattices or polynomial equations, e.g. NTRU scheme
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
    • H04L9/0869—Generation of secret information including derivation or calculation of cryptographic keys or passwords involving random numbers or seeds
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3236—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using cryptographic hash functions

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Storage Device Security (AREA)
EP21878308.2A 2020-10-05 2021-10-04 Dezentralisierte verschlüsselung auf der basis von attributen mehrerer autoritäten Active EP4226575B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202063087866P 2020-10-05 2020-10-05
PCT/US2021/053415 WO2022076327A1 (en) 2020-10-05 2021-10-04 Decentralized multi-authority attribute-based encryption

Publications (4)

Publication Number Publication Date
EP4226575A1 EP4226575A1 (de) 2023-08-16
EP4226575A4 EP4226575A4 (de) 2024-04-03
EP4226575C0 true EP4226575C0 (de) 2025-04-30
EP4226575B1 EP4226575B1 (de) 2025-04-30

Family

ID=81125442

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21878308.2A Active EP4226575B1 (de) 2020-10-05 2021-10-04 Dezentralisierte verschlüsselung auf der basis von attributen mehrerer autoritäten

Country Status (4)

Country Link
US (1) US12238212B2 (de)
EP (1) EP4226575B1 (de)
JP (1) JP7700851B2 (de)
WO (1) WO2022076327A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230016859A1 (en) * 2020-07-13 2023-01-19 Inpher, Inc. Multi-Pivot Partial Quicksort and Oblivious Comparisons of Secret Shared Arithmetic Values in a Multi-Party Computing Setting
US12375286B2 (en) * 2021-01-06 2025-07-29 Ntt Research, Inc. Decentralized multi-authority attribute-based encryption from bilinear diffie-hellman assumptions
JP7691400B2 (ja) * 2022-09-28 2025-06-11 Kddi株式会社 暗号化装置、暗号化方法及び暗号化プログラム
WO2025212723A1 (en) * 2024-04-02 2025-10-09 Ntt Research, Inc. Reduced-size ciphertext compatible with pre-existing attribute-based encryption schemes
CN119519962A (zh) * 2024-11-18 2025-02-25 中国移动紫金(江苏)创新研究院有限公司 跨链数据传输方法及系统
CN119652608B (zh) * 2024-12-06 2025-10-10 东南大学 具有非单调访问控制结构的多客户端求交函数加密方法、存储介质及设备

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100185861A1 (en) * 2009-01-19 2010-07-22 Microsoft Corporation Anonymous key issuing for attribute-based encryption
WO2016162941A1 (ja) * 2015-04-07 2016-10-13 三菱電機株式会社 暗号システム及び鍵生成装置
JP6700797B2 (ja) * 2016-01-13 2020-05-27 日本放送協会 鍵生成装置、中間暗号化装置、委託暗号化装置、復号装置およびそれらのプログラム、ならびに、個人情報保護システム
US11140141B2 (en) * 2017-09-18 2021-10-05 Fiske Software Llc Multiparty key exchange

Also Published As

Publication number Publication date
US20230379153A1 (en) 2023-11-23
US12238212B2 (en) 2025-02-25
JP2023544198A (ja) 2023-10-20
EP4226575B1 (de) 2025-04-30
EP4226575A1 (de) 2023-08-16
EP4226575A4 (de) 2024-04-03
WO2022076327A1 (en) 2022-04-14
JP7700851B2 (ja) 2025-07-01

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